Xjohn i ii



(No Model.)

J. H. BR OWN.

ORDNANGE.

UNITED STATES PATENT (Martienrx JOHN ll. liROlVN, F NE\V YORK, N. Y.

OR'DNANCE.

SPECIFICATION forming part of Letters Ratent No. 41263, dated October 8.1889.

VEppsteintiti rtmy i4.. iss?.

I will describe in detail a piece of ordnancev embodying my improvement,and then point out the novel features in the claims.

In the accompanying drawings, Figure 1 is a central longitudinal sectionof a cannon trai longitudinal section of a portion thereof embodying myimprovement. Fig. 2 is acendrawn on a very much larger scale. Fig.'3 isa transverse section of the same drawn to the same scale as Fig. 2. Fig.4 is aperspec tive view of a portion of wire or ribbon which is used inthe cannon.

Similar letters of reference designate corresponding parts in all thefigures.

A designates an internal piece, consisting of a number of sections madein the form of segments of a circle fitted together laterally.

They extend throughout the length of the cannon. As shown, there are sixof these sections a. a2 a3 a* a5 as. The laterally-meeting edges orsides of these sections may extend inthe direction of the axis of thecannon, or,in other words, maybe straight from end to end of the cannon;or they may have a slight spiral extension. Preferably they will be madeas last suggested, and then the joints formed by the contact of theirmeeting edges or sides may advantageously correspond to the spiral of`groove 2.

the riding ot the cannon, if there be any riding in it. These sect-ionsmay be made of any suitable material-ass for instance, what is known asgnu-metal or steel. Preferabl)r each section will be provided along oneof its sides or lateral edges with a tongue l, and at the other of itssides or lateral edges with a Then the tongue 1 of each section willenter the groove i of the next adjacent section. Itwill also beadvantageous to malte the sides or lateral edges irregular. l have shownthem made irregular. As shown, the portions 8 of the meeting edges orsides which are close to the internal arc-sfuspedv surfaces of thesections are radial and are out of line Serial No. 227,551. (No model.)

with portiousat of such meeting edges or sides also radially disposedand which are located on the external are-shaped surfaces of thesections, and the tongues and grooves are intermediate of the portionsedges Qr sides. When thus constructed, joints will serve words, willpreclude the discharge of gas between the sections.

the

B designates wire or ribbon, preferablyy made of spring-tempered steel.It is shown as comparatively at in the transverse section; or, in otherwords, it is considerably wider than it is thick. It is wound around theexterior of the internal part A spirally,

and serves to bind the sections of said internal part together.

Asshown, the internal part A is externally screw-threaded orA ribbed,and the wire or ribbon B is internally screw-threaded or ribbed.

'The 'screw -tl'n'eutof rib on the interior of -thea-s gas-checks, or,in other.

3 4 of the meeting I wire or ribbon engages with the screw-thread or ribon the exterior ot the internal piece of the can-non. The wire or ribbonis so Wound that the convolutions of each coil fit closely together sideby side, and therefore coverthe internal piece at every point.

I have shown several coils of wire or ribbon wound around theinternal-part, and I have shown the wire or ribbon as serew-threaded orspirally ribbed on both sides, so that the interior of the second coilwill engage with the exterior ofthe first coil. .I The interior ofthe-third coil will engage' with the exterior ot the second coil, and soon. The diierent coils ot wire or ribbon are so wound that theconvolutions of the second coil will be out of line with theconvolutions of theA first coil.

he convolutions ot the third coil .will beout of line with theconvolutions of the second coil, or approximately in line with the con-Ivolutions of the first coil, and so on. Thus they will break joints andprot-ect the internal piece the better.

As the cannon is tapered,the dierentcoils of Wire or ribbon terminate atdifferent distances from the muzzle of the cannon.

C designates an outer shell, which may be made of any suitable metal,preferably steel. lt extends from end to end of the can non, coveringthe wire or ribbon li, and it, as

.showm engages with the external' screw IOC tremity of the internal partA.

be 'made in As it forms no feature The breech of `the cannon may anysuitable manner.

of my present improvement, I have not shownA any manner of securing it.

When the sections of the internal piece are' made with overlappingjoints, serving as gaschecks, they may expand or move transversely to aslight degree, so that the strain to which" they will besubjected may betransmitted to the wire or ribbonland shell, and therefore partiallyborne by the' wire or ribbon and then a'll parts of the cannon shefll.This will be advantageous, because will contribute 'to resist thestrain.

I do not claim, broadly,`herein a cannon provided with a series ofspil-ally and concentrically wound plates having grooves and progectionson opposite sides thereof, the grooves and projections on each platereceiv-l ing and itting intov the projections or grooves on the nextpreceding and succeeding plates.

l/Vhat I claim as my invention, and desire to secure by Letters Patent,isv1. A gun having its core formed in` longitudinal sections, and itsbody formed of wire Wound around the said longitudinal sections,lsubstantially as set forth.

2. A gun having a coreformed of lorig'i tudinal sections,a body portionformed of wire Wound around the said core-sections, and

an' exterior jacket to ItI -is stantially as set forth.

3. A piece of ordnance havingla core-section composed of sections fittedtogether lati erally, and a wire or ribbon .woundaround the 'same andexternally screw-threadedv or spirally ribbed, substantially asspeciied;

4. A piece of ordnance havinga core-section composed of sections fittedtogether Iatf erally and screw-threaded circumferentially, and a wire orribboscreW-threaded' or spirally ribbed and' wound around the sa1ne,sub`

stantially as specified.` 5. A piece of ordnance having `a'c'ore-secprotect the Wire, subf tion composed of sectionstted together'lat-4erally, and 'several coils ofwirc or ribbon which is screw-threaded .orribbed -upon contiguous surfaces, said coils of wire or ribbon beingsodisposed .as to break'joints, substan-A tially as specified.

= 6. A piece of ordnance having" core-sec? tion composed of sections`fitted together laterally, a vscrew-threaded wire or ribbon wound,

`aroundthe same, and an external screwthreadedl outer shell engagingwith the said Wire 4or ribbon, substantially as specified.-

7.' A- piece of ordnance having acore-sec tion composed ofsections'fitted together lat-` erally and screw-threadedcircumferentially,

-a wire or ribbon wound around.v said innerA part and screw-threaded orspil-ally ribbed,

and an outer'shell engaging with thescre'w'-I thread or rbiof the wire.or ribbon, substantially as specified."

' JOHN H. BROWN. VVit/nessesnv lWILLIAM l'Irnumu

